Results 21 to 30 of about 45,988 (266)

Improvement of the Thermal Stability of Zircon by Formation of the Solid Solution of Cr in Zircon

open access: yesJournal of Asian Ceramic Societies, 2020
In this paper, the effects of Cr2O3 additive on the thermal stability and zircon decomposition were investigated. The substitution of Cr at zircon lattice and the formation of solid solution were also discussed. Cr2O3 was added at up to 4 wt.% to zircon.
Hudsa Majidian   +2 more
doaj   +1 more source

Electrostatic force: A novel method for mounting small zircon grains to expose the maximum outer surface

open access: yesSolid Earth Sciences, 2020
Mirco-beam isotopic analyses of zircon have increased dramatically with applications for providing multi-isotopic information. As small as 2–5 μm spot size could be used by secondary ion mass spectrometry for in-situ isotope analysis of zircon with high ...
Xiao-Xiao Ling   +3 more
doaj   +1 more source

An X-ray diffraction method for determining the amount of xenotime in a zircon sample [PDF]

open access: yesBulletin of the Geological Society of Finland, 1984
An X-ray method was developed for determining the amount of xenotime or zircon in a zircon ‒ xenotime sample. Such analyses are useful in establishing whether a solid solution exists between xenotime and zircon or whether there is a separate xenotime ...
R. Törnroos
doaj   +1 more source

Late paleozoic to early mesozoic provenance record of paleo-pacific subduction beneath South China [PDF]

open access: yes, 2015
Northeast trending Yong'an Basin, southeast South China Craton, preserves a Permian-Jurassic, marine to continental, siliciclastic-dominated, retroarc foreland basin succession.
Hu, L.   +4 more
core   +1 more source

U–Pb zircon ages of the host rocks of the Juomasuo Au–Co–Cu deposit, northeastern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2017
The Salittu Formation is one of the few metavolcanic successions in the U-Pb zircon single grain dating using the LA-MC-ICP-MS technique was utilized to determine the age of the host rocks of the Juomasuo Au-Co-Cu deposit located in the late Archean ...
P. Nikkola, I. Mänttäri, O.T. Rämö
doaj   +1 more source

Luminescence spectroscopy of natural and synthetic REE-bearing minerals [PDF]

open access: yes, 2009
This study investigates the photoluminescence (PL), cathodoluminescence (CL), radioluminescence (RL) and ionoluminescence (IL) of natural and synthetic minerals.
Friis, Henrik
core   +2 more sources

Identifying the volcanic eruption depicted in a Neolithic Painting at Çatalhöyük, Central Anatolia, Turkey [PDF]

open access: yes, 2014
A mural excavated at the Neolithic Çatalhöyük site (Central Anatolia, Turkey) has been interpreted as the oldest known map. Dating to ~6600 BCE, it putatively depicts an explosive summit eruption of the Hasan Dağı twin-peaks volcano located ~130 km ...
Ulusoy, İnan   +24 more
core   +2 more sources

Mineral chemistry and genesis of Zr, Th, U, Nb, Pb, P, Ce and F enriched peralkaline granites of El-Sibai shear zone, Central Eastern Desert, Egypt

open access: yesGeologija, 2013
El-Sibai mineralized shear zone trending NNE-SSW is located at the northern segment of Gabal El-Sibai (500m in length and 0.5 to 1.5 m in width).
Mohamed A. Ali
doaj   +1 more source

Influence of Growth Stimulants on Seed Germination and Seedlings Growth of Scots Pine (Pinus sylvestris L.)

open access: yesЛесной журнал, 2023
Scots pine (Pinus sylvestris L.) is a potential introduced plant that can be used for reforestation in the southern part of Primorsky Krai. This plant is valuable for water regulation and mountain strengthening. It is widely used in the national economy.
Valentina Yu. Ostroshenko   +1 more
doaj   +1 more source

Discovery of mafic impact melt in the center of the Vredefort dome:archetype for continental residua of early Earth cratering? [PDF]

open access: yes, 2014
Melting by impact heating is thought to have been a significant process in the modification of early planetary crusts; however, crustally derived melt bodies in ancient terrestrial crust are frequently presumed to be absent due to erosion.
Barker, I. R.   +6 more
core   +1 more source

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